池养条件下似刺鳊鮈早期发育阶段的摄食与生长特性  

The Feeding Habits and the Growth of Paracanthobrama guichenoti in Early Developmental Stage under Artificial Farming Conditions

作　　者：徐钢春[1,2] 顾若波[2] 李晓莉[1,2] 闻海波[2] 曾令兵[1,2] 

机构地区：[1]中国水产科学研究院长江水产研究所淡水生态与健康养殖重点开放实验室,荆州434000 [2]中国水产科学研究院淡水渔业研究中心,无锡214081

出　　处：《动物学杂志》2009年第1期99-105,共7页Chinese Journal of Zoology

基　　金：中央级公益性科研院所基本科研业务费专项资金(中国水产科学研究院淡水渔业研究中心)项目(No.2007JBFB03);中国水产科学研究院淡水生态与健康养殖重点开放实验室开放课题项目(No.2007FEA0203);农业部水生动物遗传育种和养殖生物学重点开放实验室开放课题项目(No.BM2007-08)

摘　　要：对人工培育的似刺鳊鮈(Paracanthobrama guichenoti)仔鱼、稚鱼和幼鱼的生长与摄食节律进行了研究。结果显示,在1～70日龄间,似刺鳊鮈全长平均日增长率为3.55%,体重平均日增长率为11.26%,头长/全长值随着日龄的增长而变小。全长(L,mm)与体重(M,mg)的关系式为M=0.0012L2-0.0564L+0.6504;体重(M,mg)与日龄(D,d)的关系式为M=0.0043e0.0936D;全长(L,mm)和日龄(D,d)的关系式为L=0.0154D2-0.0128D+8.1965。在饵料充足的条件下,20日龄晚期仔鱼全天均有很高的摄食发生率,小高峰出现在8:00时;40日龄稚鱼则表现出明显的昼夜摄食节律,属于典型的白天摄食类型,日摄食率2.3376%。20日龄仔鱼和40日龄稚鱼饱食后分别经6h、5h整个消化道排空。在水温25℃及饥饿空胃状态下,10日龄仔鱼只经3d即开始出现死亡个体,经5d全部死亡;20日龄仔鱼经6d开始出现死亡个体,经9d全部死亡;40日龄稚鱼经7d才开始出现死亡个体,10d后全部个体均死亡。The rhythm of growth and feeding in larva, juvenile and young fish of Paracanthobrama guichenoti were studied under the artificial farming conditions. The results showed that, from 1 to 70 days, the daily growth rates of body length and weight were 3.55% and 11.26%, respectively. Head length/Total length decreased along with the increasing day age. The relationship between the total length （L, mm） and body weight （M, mg） was counted to be M = 0.001 2 L^2 - 0.056 4L ＋ 0.650 4, between body weigh （M,mg） and day age （D,d） was expressed to be M = 0.004 3 e^0.9936D ,and between the total length （L,mm） and day age （D ,d） was calculated to be L = 0.015 4 D^2 - 0.012 8D ＋ 8.196 5. 20 day age late larva have the highest feeding rate with an amnle sunnlv of bait. a peak value was observed at 8：00 am. In contrast, 40 day age juvenile showed feeding rhythm obviously and was identified as the type of daytime feeding, daily feeding rate was 2. 337 6 %. After 6 h to eat gluttonously, the whole alimentary canal of late larva was evacuated completely, while juvenile needed 5 h. Furthermore, under starvation, 10 d larva were dead partially after 3 days, and all died 5 days later. The same tendency was also found in 20 day age larva at 6th and 9th day,40 day juvenile at 7th and 10th day,respectively.

关 键 词：似刺鳊鮈 生长特性 摄食节律 

分 类 号：S917.4[农业科学—水产科学]